Java 函数在 Matlab 类中变得未定义

Question

我正在开始使用 matlab 中的 OOP。然而，在我的代码中使用 java 对象让我相当头疼。具体来说，当我尝试运行 testClass.start() 时遇到此错误:

Undefined function 'SessionSettings' for input arguments of type 'char'.

上述函数存在于导入的 jar 中，并且如果代码在 matlab 类之外运行，则代码可以正常运行。这是类(class):

classdef testClass

 properties
     data
 end

 methods

      function obj = testClass()
         % class constructor
         javaaddpath /home/test/test-examples-1.5.3.jar;
         import test.examples.thingy.*;

      end


     function ret = start()
         % 
         settings = sessionSettings('configFilePath');
      end
 end

end

Answer 1

引用import()的文档:

The import function only affects the import list of the function within which it is used. When invoked at the command prompt, import uses the import list for the MATLAB® command environment. If import is used in a script invoked from a function, it affects the import list of the function. If import is used in a script that is invoked from the command prompt, it affects the import list for the command environment.

The import list of a function is persistent across calls to that function and is only cleared when the function is cleared.

这意味着，您的方法 start() 将看到一个空的导入列表。